| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 664 |
55.3%
|
| 1 | Just once or twice | 175 |
14.6%
|
| 2 | Several times | 182 |
15.2%
|
| 3 | Many times | 115 |
9.6%
|
| 4 | Always | 60 |
5%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 4 |
0.3%
|